WASHINGTONN, May 20, 2004, (WAFA) - The US White House said Wednesday it is "very concerned" about the number of Palestinian citizens killed in Rafah.... "We are very concerned about reports from Gaza and the number of Palestinians who are said to have been injured and killed," White House spokesman Scott McClellan said.... "We have asked the government of Israel for the facts about what happened today. We will continue to follow this closely and we urge all parties to exercise maximum restraint," McClellan said.... At least ten Palestinian citizens, including children, were wantonly slaughtered and sixty others were wounded, several critically, when Israeli Apache helicopters fired Wednesday missiles at a peaceful demonstration in Rafah....